Stack Inc. Provides "Appify" Mobile App Platform to Color Contact Lens E-commerce Site "Mew contact"

Stack Inc. (Headquarters: Shibuya-ku, Tokyo; CEO: Ryosuke Fukuda; hereinafter "Stack") is pleased to announce that it has provided its Shopify-integrated mobile app construction platform, "Appify," to "Mew contact" (operated by Karacon Works Co., Ltd.), a specialized e-commerce site for color contact lenses, to enhance customer loyalty and mobile experiences.

Background: Successful Loyalty Programs and Seeking Deeper Customer Touchpoints "Mew contact" has been using "VIP," a member loyalty program application provided by Stack, to operate a comprehensive membership system. By launching active CRM measures, including a proprietary points program, a friend referral campaign, and a "rank-up chance campaign" that eases conditions for a limited time, the store has successfully generated high engagement, achieving an 80% point redemption rate and a 1.2x increase in average purchase value.

While aiming to further improve member experiences, the absence of an "official app" became a major challenge. Previously, the site offered a self-developed app built from scratch, which was widely used by customers, but it was discontinued during a system overhaul associated with a site renewal to prioritize operational efficiency.

Following the renewal, customers continuously expressed desires for the app's revival. However, high costs and maintenance burdens associated with conventional scratch development made it difficult to proceed with re-introduction. By adopting "Appify," which integrates deeply with Shopify, the company successfully relaunched the long-awaited official app while minimizing development resources.

What "Appify" Enables This app is released as a WebView application that leverages the convenience of the existing Shopify store. Introducing Appify provides the following features to enhance customer experience:

- Direct Information Delivery via Push Notifications: Sends the latest campaign information and limited sale notifications directly to smartphones, reaching customers with higher rates than email or social media. - Seamless Experience Leveraging Shopify Data: Utilizes Shopify product and collection information directly. Customers already registered on the website can use their previous purchase history and customer information on the app. - Strengthening Customer Touchpoints: Provides instant access to the store from home screen icons without needing to launch a web browser, contributing to improved return rates and loyalty.

Comment from Mr. Shinoike, E-commerce Department Manager, Karacon Works Co., Ltd. "At Mew contact, we previously provided a mobile app built from scratch that was used by many fan customers. However, due to system overhaul associated with the e-commerce site renewal, we made the painful decision to discontinue it to prioritize operational efficiency.

Since the renewal, our website has steadily grown on its own, but we have constantly received requests from customers seeking convenience to revive the app. Although we fully understood the importance of an app, the reality was that we could not step into re-introduction due to concerns over high development costs and maintenance burdens.

In such circumstances, by adopting 'Appify,' which has extremely high compatibility with Shopify, we were able to launch quickly while keeping development man-hours low. We are very happy to finally be able to revive our official app as a 'place to connect more deeply with customers,' which had been our long-standing wish."

App Launch Commemorative Campaign To commemorate the start of the app distribution, we are presenting points that can be used immediately to all customers who perform new member registration or first-time login via this app.

Campaign Overview Content: 500 points for new member registration, 300 points for first-time login by existing members. Period: From Thursday, May 14, 2026, until further notice. Points validity: 3 months from the date of grant. Conditions: (1) App download, (2) Member registration/login.